Fatigue Life Analysis of the Stabilizer Anti-Roll Bar Using ANSYS

2011 ◽  
Vol 383-390 ◽  
pp. 5894-5898 ◽  
Author(s):  
Su Hong Liu ◽  
Fang Li
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Fatigue Life ◽  
Parametric Model ◽  
Von Mises Stress ◽  
Endurance Test ◽  
Finite Element Technology ◽  
Life Analysis ◽  
Fatigue Life Analysis ◽  
Von Mises

The stabilizer anti-roll bar can prevent the vehicle from rollover, so it is important to get the mechanical properties of it. To achieve it, the finite element technology is chosen and the parametric model was built in the first place. The von Mises stress distribution, reliability and the sensitivity were obtained after being analyzed respectively. Based on these, the fatigue life was estimated finally. The fatigue analysis results were contrasted with the life requirements of stabilizer bar’s endurance test.

scholarly journals Conceptual Design and Finite Element Fatigue Life Analysis of a Poppet Valve Spring Compressor

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Anthony Simons ◽  
Gideon Quartey ◽  
Nathaniel Frimpong Asante
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Combustion Engine ◽  
Neck Region ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Valve Spring ◽  
Poppet Valve ◽  
Fatigue Life Analysis ◽  
Von Mises

In the overhauling of the internal combustion engine, a lot of tools are used and among them is the poppet valve spring compressor. In Ghana, auto mechanics at the “way-side” garages make use of improvised tools, such as pipes, pliers, and push rods, for compressing valve springs. However, there are some challenges associated with the usage of these tools which include misplacement of cotters, injuries, and sometimes valve bends. In this work, a review of some of the existing designs of the improvised tools was considered. Also, a survey was conducted to seek the opinion of users (auto technicians and/or mechanics) of the tools. A design was made for spring compression by incorporating a magnet with a pull force of 679.78 N to take care of the removal of cotters during valve assembly dismantling. In this research, an efficient and user-friendly poppet valve spring compression tool with a total mass of 0.88 kg was designed. Finite element analysis (FEA) was performed on the upper and lower parts of the tool to examine its response due to the loads that act on it during operation. It was discovered from the analysis that the upper frame of the valve spring compressor experienced the highest von Mises stress of 59.77 MPa at the neck region, whilst the corresponding fatigue analysis showed a maximum fatigue life of 8.355 × 109 cycles.

Predicting Reliability of Structural Systems Using Classification Method

2013 ◽  
Author(s):  
Recep M. Gorguluarslan ◽  
Seung-Kyum Choi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Probabilistic Neural Network ◽  
Engineering Problem ◽  
Support Vector ◽  
Structural Systems ◽  
Element Analysis ◽  
Life Analysis ◽  
Fatigue Life Analysis

This research examines classification approaches for estimating the reliability of structural systems. To validate the accuracy and efficiency of the classification methods, a practical engineering problem; namely, a spider assembly of a washing machine, has been considered. For the spider assembly, fatigue life test, finite element analysis, physical experimentation, and a classification processes are conducted in order to establish the analytical certification of its current design. Specifically, the finite element analysis and fatigue life analysis are performed and their results are validated compared to physical experimental results. The classification process is developed to estimate the probability of failure of the spider assembly in terms of stress and fatigue life. The relationship between the random quantities and structural responses of the spider assembly is established using probabilistic neural network and the support vector machine classifiers. The performance margin of the spider assembly is fully identified based on the estimated failure probability and structural analysis results from the fatigue life analysis and classifications.

Microstructural, surface and fatigue analysis of stress peened leaf springs

2015 ◽  
Vol 6 (5) ◽  
pp. 589-604 ◽  
Author(s):  
Georgios Savaidis ◽  
Stylianos Karditsas ◽  
Alexander Savaidis ◽  
Roselita Fragoudakis
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Fatigue Life ◽  
Manufacturing Process ◽  
Treatment Process ◽  
High Strength ◽  
Content Type ◽  
Leaf Springs ◽  
Life Analysis ◽  
Fatigue Life Analysis

Purpose – The purpose of this paper is to investigate the fatigue and failure of commercial vehicle serial stress-peened leaf springs, emphasizing the technological impact of the material, the thermal treatment and the stress-peening process on the microstructure, the mechanical properties and the fatigue life. Theoretical fatigue analysis determines the influence of each individual technological parameter. Design engineers can assess the effectiveness of each manufacturing process step qualitatively and quantitatively, and derive conclusions regarding its improvement in terms of mechanical properties and fatigue life. Design/methodology/approach – Two different batches of 51CrV4 were examined to account for potential batch influences. Both specimen batches were subjected to the same heat treatment and stress-peening process. Investigations of their microstructure, hardness and residual stress state on the surface’ areas show the effect of the manufacturing process on the mechanical properties. Wöhler curves have been experimentally determined for the design of high-performance leaf springs. Theoretical fatigue analyses reveal the influence of every above mentioned technological factor on the fatigue life of the specimens. Therewith, the effectiveness and potential for further improvement of the manufacturing process steps are assessed. Findings – Microstructural analysis and hardness measurements quantify the decarburization and the degradation of the specimens’ surface properties. The stress-peening process causes significant compressive residual stresses which improve the fatigue life. On the other hand, it also leads to pronounced surface roughness, which reduces the fatigue life. The theoretical fatigue life analysis assesses the mutual effect of these two parameters. Both parameters cancel each other out in regards to the final effect on fatigue life. The sensitivity of the material and the potential for further improvement of both heat treatment and stress peening is appointed. Research limitations/implications – All quantitative values given here are strictly valid for the present leaf spring batches and should not be widely applied. The results of the present study indicate the sensitivity of high-strength spring steel used here to the various technological factors resulting from the heat treatment and the stress-peening process. In addition, it can be concluded that further research is necessary to improve the two processes (heat treatment process and the stress peening) under serial production conditions. Practical implications – The microstructure investigations in conjunction with the hardness measurements reveal the significant decrease of the mechanical properties of the highly stressed (failure-critical) tensile surface. Therewith, the potential for improvement of the heat treatment process, e.g. in more neutral and controlled atmosphere, can be derived. In addition, significant potential for improvement of the serially applied stress-peening process is revealed. Originality/value – The paper shows a systematic procedure to assess every individual manufacturing factor affecting the microstructure, the surface properties and finally, the fatigue life of leaf springs. An essential result is the quantification of the surface decarburization and its influence on the mechanical properties. The methodology proposed and applied within the theoretical fatigue life analysis to quantify the effect of technological factors on the fatigue life of leaf springs can be extended to any engineering component made of high-strength steel.

“STRUCTURE ANALYSIS, CONTACT STRESS ANALYSIS AND FATIGUE LIFE ANALYSIS OF SPUR GEAR ASSEMBLY BY USING FEM”

2018 ◽  
Vol 4 (4) ◽  
pp. 13
Author(s):  
Anand Mohan Singh ◽  
Megha Bhawsar ◽  
Neeraj Kumar Nagayach
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Failure Analysis ◽  
Contact Stress ◽  
Spur Gear ◽  
Contact Analysis ◽  
Element Analysis ◽  
Life Analysis ◽  
Fatigue Life Analysis

In this present work a virtual environment has been created to investigate the failure analysis on spur gear assembly in which structural analysis, fatigue failure analysis and contact stress analysis have been performed using finite element method. For this work, a three dimensional cad model has been created and imported to ANSYS workbench for further finite element analysis. Various boundary conditions have been used to perform structural, fatigue failure assessment and contact analysis such as revolute joints is provided with Body Ground connection for 60 rpm for structure analysis, Augmented Lagrange method is set for contact analysis, for fatigue life analysis the fatigue strength factor is used as 0.85 for fully reverse loading and the life of shear stress in cycles and for the contact analysis linear and nonlinear contact are used for both source and target body. It has been observe that contact stress and bending stress not attain their maximum values at the same points, if the contact stress minimize in primary design stage then the failure of gear can minimized by analysis of the problem during the earlier stage of design. It can also be state that by using finite element analysis complex analysis like fatigue and contact analysis can be performed very accurately within a very short time and cost effectively rather than experimental analysis.

Strength Safety Coefficient and Fatigue Life Analysis of Coupling Diaphragm Based on FE-Simulation

2014 ◽  
Vol 541-542 ◽  
pp. 569-573 ◽  
Author(s):  
Zhong Ke Tian ◽  
Chao Yin ◽  
Fa He Yang
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Fe Simulation ◽  
Equivalent Stress ◽  
Strength Criterion ◽  
Element Model ◽  
Safety Coefficient ◽  
Life Analysis ◽  
Fatigue Life Analysis ◽  
Stress Fatigue

Based on average loading assumption, a non-linear contact finite element model of coupling triple-diaphragm assembly configuration is established. In accordance with the result of diaphragm equivalent stress, the yield strength criterion and high cycle-stress fatigue life norm are adopted to calculate strength safety coefficient and fatigue life of coupling diaphragm. The durability of coupling diaphragm is proved enough numerically.

Fatigue Life Analysis of High Performance Motorcycle Disc Brake

2014 ◽  
Vol 699 ◽  
pp. 354-359
Author(s):  
Taufik Roni Sahroni ◽  
Sze Yeau Yong ◽  
W. Sapto Widodo ◽  
Abu Bakar Baharudin ◽  
Sivaraos ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Fatigue Life ◽  
Structural Analysis ◽  
High Performance ◽  
Von Mises Stress ◽  
Disc Brake ◽  
Suitable Material ◽  
Brake Rotor ◽  
Life Analysis ◽  
Fatigue Life Analysis

This paper presents fatigue life analysis of high performance motorcycle disc brake. The design parameter such as stress, deformation and safety factory that influences the disk brake on a high performance motorcycle were investigated. The simulation of static structural analysis of high performance motorcycle is successfully presented on 3 proposed materials by using ANSYS software. The static structural analysis is performed on the disc brake rotor with these candidate materials. From the analysis, Martensitic stainless steel, Wrought AISI 410 has the lowest value in Von-Mises stress which is 766.9MPa. Furthermore, it is less deformed which is 0.3429mm and has the factor of safety more than 1. Thus, this project proposes Martensitic Wrought AISI 410 stainless steel as the suitable material for disc brake rotor on HONDA GL1500 VALKYRIE motorcycle.

scholarly journals STUDI NUMERIK UMUR KELELAHAN (FATIGUE LIFE) PADA PROPELLER KAPAL PENANGKAP IKAN DENGAN KAPASITAS MESIN 24 HP

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Rizqi Ilmal Yaqin ◽  
Angger Bagus Prasetiyo ◽  
Pritiansyah Pritiansyah ◽  
Muhammad Haritsah Amrullah ◽  
Binsar Maruli Tua Pakpahan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Rapid Development ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Fishing Boat ◽  
Finite Element Analysis Simulation ◽  
Von Mises ◽  
Model Affect

Propeller is part of a key component in fishing boat propulsion. Propeller can provide momentum to the fluid which can be a thrust on the ship. However, The failure of the propeller found prematurely. The failure of the propeller maybe because of overload on the propeller model so the fatigue life of the propeller becomes low. On the other hand, the rapid development of technology can simulate a design model to look for failures that occur. Finite Element Analysis is one of the designer solutions to determine the age of failure of a model and failure-prone areas in a model. This study uses propeller model data from fishing boat with engine 24HP in Dumai City TPI that always fail prematurely. The material used is copper alloy. While the drawing model uses Autodesk Inventor and Finite Element Analysis simulation using ANSYS R17.2 software with the number of model nodes is 51108 and the number of elements of the model is 26268. The results obtained from this study are Von Mises stress on the simulation model that is equal to 613.33 MPa to 0.01164 MPa. While the deformation value due to the effect of loading on the model is 5,3657 mm to 0 mm. These results affect the age of fatigue (fatigue life) on the model with the highest value 109 and the lowest 0. The results of the fatigue life value on the model affect the results of the level of damage and the safety number of the model with successive values of 1032 to 1 and 15 to 0.32446. The conclusion of the result is the propeller will fail prematurely.

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